Revolving ratchet-wrench.



PATBNTED FEB. 3, 1903.

J. C. GARLHIME.

RBVOLVING RATGHET WRENCH.

APPLICATION FILED HAR. 3, 1902.

N0 MODEL.

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JACOB C. CARLHIME, OF ASHVILLE, PENNSYLVANIA.

REVOLVING RATCH ET-WRE'NCH.

SPECIFICATION forming' part of Letters Patent No. 719,645, datedFebruary 3, 1903.

Application filed `March 3 1902.

invention, such as will enable others skilled 1o in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

My invention has relation to improvements in ratchet-wrenches; and theobject is to provide a nut or bolt wrench of the kind named and for theuses to which such implements are intended which is of simpleconstruction, efticient and convenient in operation, and having jawswhich are readily adjusted to different-sized nuts or to screw and boltheads.

The invention consists in the novel construction of parts and theirarrangement and aggroupment in operative combination,as will behereinafter fully described and the novelty thereof particularly pointedout and distinctly claimed.

I have fully and clearly illustrated the invention in the accompanyingdrawings, to be taken as part hereof, and wherein- Figure 1 is a View ofthe wrench complete. Fig. 2 is a view with one of the parts removed,showing the pawl-and-ratchet mechanism. Fig. 3 is a central longitudinalsection of the implement. Fig. 4 is a perspective view of one of the jawmembers. Fig. 5 is a perspective view of the jaw members disposed as inoperative relation.

Referring to the drawings, A designates the handle of the implement,consisting of two parts l 2, of duplicate construction, laid and securedtogether for the length of the handle and formed with circularextensions 3 4 at their inner ends, having circular openings 5 6,constituting hub-bearings and so arranged that a space is made betweenthem, in which the ratchet-disk is held and rotated. Each section orpart of the handle is coincidently hollowed out, as at 7, forming a tubewhen the sections are laid upon one another and are secured togetherfirmly by clamps,

Serial No. 96,413. (No model.)

screws, or any other suitable fastenings. In the tube thus formed isslidingly disposed the rod or stem 8 of the pawl 9, formed on the innerend of the stem. The stem of the pawl for a proper distance is madesmaller than the tube, as at 10, and has arranged thereon an expansivespring 11,.'naving one end anchored to a point in the tube and the otherend lodged against the base of the pawl.

A ring 12 or other finger-piece is secured in or to the projecting outerend ot' the pawlstem, whereby it may be manipulated. In the tube is madea space or chamber 13 of greater diameter than the remainder of thetube, into which the head of the pawl may be drawn from its square seat14 and then turned on its axis so that its nose will engage the ratchetsto turn the disk reversely.

15 designates the ratchet-disk consisting of a disk formed withratchet-teeth 16, which may be engaged by the pawl at either end. The-disk 15 is formed with a strong hub 19, extending from each facethereof and formed Vwith a rectangular opening 20, having tapering orinclined end walls, whereby the jaws may have room to expand.

21 designates the jaws, duplicates in shape and construction andconsisting of a stem 22, having a straight inner face extending thegreater portion of their length and outwardlycurved portions at theirlower end portions,

as at 23, yto engage against the inclined end v walls of the rectangularopening 20. At the upper end of the jaws are formed heads 24, made witha nut-seat 25 and constituting the gripping portion of the jaws. Thebacks of the jaws are curved inward longitudinally, as shown, so theywill spread automatically in the hub. In the inner faces of the jaws areformed alining grooves 26, in one of which is secured a spring 27, thefree end of which rests in the companion groove and bears against theother jaw and tends to keep the jaws always pressed outward to thecapacity desired. In the lower ends of the jaws is loosely secured a pin28, which serves to keep the jaws in alinement.

To utilize the implement after the parts have been assembled and securedtogether in relative positions, all that is necessary is to place thejaws over the nut or bolt-head and turn the implement in the properdirection.

Ion

If it is desired to reverse the direction of rotation, the stem isWithdrawn until the pawlhead is drawn from its square seat in the end ofthe handle and into the adjacent space and then turn the stem halfaround and let it loose, when the spring on the stern will move the pawlagain into engagement with the ratchet-teeth.

Having described my invention,l what I claim' is l. A ratchet-wrenchcomprising a tubular handle formed with a square opening at its innerIend and a chamberl of enlarged diameter immediately adjacent to theopening, and having parallel extensions formed with circular openings, aratchet-disk formed with teeth adapted to be engaged from eitherdirection of rotation and having a hub journaled in the circularopenings of the handle extensions, and formed with a rectangular passagevtherethrough having tapering end walls, a spring-actuated stem arrangedin the tubular handle formed on its inner end with a square pawl-headslidably fitted in the square opening and adapted to be withdrawntherefrom by the stern and be reversed, and adjustablejaws having curvedouter faces to engage the inclined walls in the opening in the hub.

2. In a ratchet-wrench the combination of the ratchet-disk having arectangular opening therethrough having tapering end walls, and jawsarranged in said opening consisting of stems with straight inner facefor a portion of their length and outwardly-curved end portions andcurved outer faces to engage the end walls of the opening through thehub and heads formed with nut-seats.

3. In a ratchet-wrench the combination of the ratchet-disk having arectangular opening therethrough having tapering end Walls, and jawsmovable endwise of the said opening consisting of stems with straightinner faces fora portion of their length and outwardly-curved endportions, and inwardlycurved outer faces to engage the inclined endwalls of the opening in the hub and heads formed with nut-seats, and aspring between the jaws to press them apart.

4. In a ratchet-Wrench the combination of 5o the ratchet-disk having ahub with a rectangular opening therethrough having inclined end Walls,jaws movable endwise in the said opening consisting of stems withstraight inner faces for a portion of their length and outwardlycurvedend portions, inwardlycurved outer faces to engage the end walls of theopening in the hub and heads formed with nut-seats, a spring between thejaws and a pin projected loosely through the curved ends of the jaws, ahandle journaled on the hub of the ratchet-disk, and a spring-actuatedpawl within the handle to engage said disk.

5. The nut-wrench herein described, comprising a tubular handle formedwith end extensions arranged on parallel planes and having circularopenings/therein, a square opening in the inner end of the handle and anenlarged space immediately adjacent thereto, a stein slidingly placed inthe handle and formed with a square pawl-head at its inner end toproject through the square hole in the end of the handle, a spring topush the stem inward, a ratchet-disk having a hub journaled in theopenings in the handle extensions, said hub being formed with arectangular hole therethrough having tapering end walls, jaws arrangedloosely and adjustably posited in said hub-opening and consisting ofstems having alining inner faces and outwardly-curved ends and headsformed with nut-seats and inwardly-curved outer faces to engage the endwalls of the hub-opening, a pin to hold the jaws in alinement and aspring to push them apart.

In testimony whereof I afx my signature in presence of two witnesses.

JACOB C. CARLI-UME.

Witnesses:

C. B. HICKS, LUCY MARKLE.

